Bututu maras kyau don tsarin (GB/t8162-2008) bututu ne marasa ƙarfi don tsarin gaba ɗaya da tsarin injina.
(1) High quality carbon tsarin karfe maki hada da 20g, 20mng da 25mng.
(2) Alloy tsarin karfe maki: 15mog, 20mog, 12crmog, 15CrMoG, 12CR2MOG, 12crmovg, 12Cr3MoVSiTiB, da dai sauransu
Cikakken sunan UHPE karfe filastik hada bututu shine UHMWPE karfe filastik hada bututu. UHMWPE Composite bututu da aka yi da UHMWPE bututu da carbon karfe bututu ta hanyar kimiyya tsari.
Q345C m karfe bututu ne idan aka kwatanta da Q345A da B. Low zafin jiki tasiri gwajin yana da low zazzabi da kuma mai kyau yi. Ratio na P da s dauke da abubuwa masu haɗari zuwa Q345A, Bambance-bambance tsakanin Q345A, Q345B da Q345C
A cikin jerin bututun ƙarfe mara nauyi, akwai wani abu mai suna Q345B bututun ƙarfe mara nauyi, wanda ke cikin jerin ƙananan gami. Daga cikin ƙananan kayan haɗin gwal, wannan abu shine mafi na kowa. Q345B m karfe bututu amfani da ake kira 16Mn m karfe bututu.
Q345D abu ne na bututun ƙarfe. Q yana wakiltar yawan amfanin wannan abu. 345 mai zuwa yana nufin ƙimar amfanin wannan abu, wanda shine kusan 345. Ƙimar yawan amfanin ƙasa yana raguwa tare da karuwar kauri.
Tushen ruwa wani nau'in bututu ne na karfe wanda ke da fashe kuma babu walda daga farko zuwa karshe. Bututun ƙarfe yana da ɓangaren rami, wanda aka fi amfani dashi azaman bututu don isar da ruwa, mai, iskar gas, iskar gas, ruwa da wasu ƙaƙƙarfan kayan.
45# bututun ƙarfe mara nauyi bayan quenching da tempering jiyya yana da kyau m inji Properties kuma ana amfani da ko'ina a daban-daban muhimman tsarin sassa, musamman wadanda connecting sanduna, kusoshi, gears da shafts aiki a karkashin alternating load.